Springheart Nantuko + Mutable Explorer + Tiller Engine + Lotus Cobra

Springheart Nantuko

Mutable Explorer

Tiller Engine

Lotus Cobra

How it works

1. Play a land.
2. When the land enters, Springheart Nantuko triggers, causing you to pay 1 to create a token copy of Mutable Explorer.
3. When the Mutable Explorer token enters, it triggers, creating a Mutavault land token that enters tapped.
4. When the Mutavault token enters, Springheart Nantuko, Tiller Engine and Lotus Cobra trigger.
5. Resolve the Tiller Engine trigger, untapping the Mutavault token.
6. Holding priority, activate the Mutavault token by tapping it, adding C.
7. Resolve the Lotus Cobra trigger, adding .
8. Resolve the Springheart Nantuko trigger, causing you to pay 1 to create a token copy of Mutable Explorer.
9. Repeat from step 3.

This clever loop uses Springheart Nantuko's landfall ability to continually copy Mutable Explorer, which floods the board with entering creatures. Each time a copy arrives, it generates a tapped Mutavault token to fuel Tiller Engine and Lotus Cobra, ensuring you have both the untapped land and the mana needed to keep paying for Springheart Nantuko's repetition. Because Mutable Explorer is a changeling, it seamlessly feeds the engine while building an unstoppable army of copies and land tokens.